diff -Nru landscape-client-14.12/debian/changelog landscape-client-14.12/debian/changelog
--- landscape-client-14.12/debian/changelog	2014-12-12 18:24:17.000000000 +0100
+++ landscape-client-14.12/debian/changelog	2015-04-04 17:58:07.000000000 +0200
@@ -1,3 +1,9 @@
+landscape-client (14.12-0ubuntu2) vivid; urgency=medium
+
+  * landscape-client-ui-install: Use Python3.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sat, 04 Apr 2015 17:57:38 +0200
+
 landscape-client (14.12-0ubuntu1) vivid; urgency=medium
 
   * New upstream version:
diff -Nru landscape-client-14.12/debian/control landscape-client-14.12/debian/control
--- landscape-client-14.12/debian/control	2014-12-12 16:11:48.000000000 +0100
+++ landscape-client-14.12/debian/control	2015-04-04 18:07:56.000000000 +0200
@@ -77,12 +77,9 @@
 
 Package: landscape-client-ui-install
 Architecture: any
-Depends: ${python:Depends}, ${misc:Depends},
-         python-gi,
-         python-dbus,
+Depends: ${installer:Depends}, ${misc:Depends},
          policykit-1,
-         gir1.2-gtk-3.0,
-         python-aptdaemon.gtk3widgets
+         gir1.2-gtk-3.0
 Description: The Landscape administration system client - UI installer
  Landscape is a web-based tool for managing Ubuntu systems.
  .
diff -Nru landscape-client-14.12/debian/rules landscape-client-14.12/debian/rules
--- landscape-client-14.12/debian/rules	2014-12-12 16:11:48.000000000 +0100
+++ landscape-client-14.12/debian/rules	2015-04-04 18:10:48.000000000 +0200
@@ -8,6 +8,10 @@
 	use_dhpython2 = yes
 endif
 
+ifeq (,$(filter $(dist_release), hardy lucid precise trusty utopic))
+	use_python3 = yes
+endif
+
 dh_extra_flags = -plandscape-common -plandscape-client
 ifeq (,$(filter $(dist_release),hardy lucid natty oneiric))
 	# We want landscape-client-ui only from precise onward
@@ -94,6 +98,16 @@
 
 ifeq ($(use_dhpython2),yes)
 	dh_python2 --no-guessing-versions
+
+    ifeq ($(use_python3),yes)
+	sed -i 's,/usr/bin/python,/usr/bin/python3,' \
+	  debian/landscape-client-ui-install/usr/bin/landscape-client-ui-install
+	echo "installer:Depends=python3:any, python3-gi, python3-dbus, python3-aptdaemon.gtk3widgets" \
+	  >> debian/landscape-client-ui-install.substvars
+    else
+	echo "installer:Depends=python:any, python-gi, python-dbus, python-aptdaemon.gtk3widgets" \
+	  >> debian/landscape-client-ui-install.substvars
+    endif
 else
     ifeq ($(use_pycentral),yes)
         ifneq (,$(py_setup_install_args))